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Test Step 1 - Verify the DTC is Active

NOTE:

Ensure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.

With the scan tool, read active DTCs.

Is this DTC active?

Yes

Go to Test Step 2 - Test for Any of the Following Active DTCs .

No

Perform the Stored Lost Communication DTCs procedure. Refer to STORED LOST COMMUNICATION DTCS (2009 - 2010) or STORED LOST COMMUNICATION DTCS (2011 & UP) .